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75754001993 is a prime number
BaseRepresentation
bin100011010001101001…
…0100101011001001001
321020112102112000201112
41012203102211121021
52220121011030433
654444555100105
75321153251445
oct1064322453111
9236472460645
1075754001993
112a144182a1a
1212821a41635
1371b3572467
143948cab825
151e85855348
hex11a34a5649

75754001993 has 2 divisors, whose sum is σ = 75754001994. Its totient is φ = 75754001992.

The previous prime is 75754001963. The next prime is 75754002001. The reversal of 75754001993 is 39910045757.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63580631104 + 12173370889 = 252152^2 + 110333^2 .

It is a cyclic number.

It is not a de Polignac number, because 75754001993 - 214 = 75753985609 is a prime.

It is not a weakly prime, because it can be changed into another prime (75754001963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37877000996 + 37877000997.

It is an arithmetic number, because the mean of its divisors is an integer number (37877000997).

Almost surely, 275754001993 is an apocalyptic number.

It is an amenable number.

75754001993 is a deficient number, since it is larger than the sum of its proper divisors (1).

75754001993 is an equidigital number, since it uses as much as digits as its factorization.

75754001993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1190700, while the sum is 50.

The spelling of 75754001993 in words is "seventy-five billion, seven hundred fifty-four million, one thousand, nine hundred ninety-three".